"People want to know why I do this, why I write such gross stuff. I like to tell them I have the heart of a small boy... and I keep it in a jar on my desk"

This quote by Stephen King is an amusing way of expressing his passion for writing. He is saying that he has the heart of a little boy, which is why he has the ability to write such "gross things". He is implying that he has a childish creativity and interest for writing, which enables him to come up with stories that are often dark and troubling. He is also suggesting that he keeps this childish heart in a container on his desk, as a tip of why he composes. This quote is a tip that even though Stephen King's stories can be dark and troubling, they originate from a place of enthusiasm and imagination. He is able to tap into his inner kid and utilize it to create stories that mesmerize and captivate readers.